A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 4140-00-927-4328
NSN 5935-01-297-6992
NSN 5998-01-577-0438
NSN 5895-00-460-7817
NSN 5835-01-332-2867
NSN 6105-00-891-9768
NSN 5925-01-552-7439
NSN 6610-01-100-3662
NSN 6645-01-432-1068
NSN 2925-01-208-6638
NSN 5835-01-399-5820
NSN 5910-01-314-4920